Drier for granular material.



No. 765,708. I PATENTED JULY 26, 1904. E. L. MBRRIMAN & J. W. VOUGHT.

DRIER FOR GRANULAR MATERIAL. nruouron FILED mm: 14, 1904.

N0 MODEL. 2 SHEETS-BEBE 1.

No. 765,708. PATENTED JULY 26, 1904.

' E. L. MERRIMAN & 'J. W. VOUGHT.

DRIER FOR GRANULAR MATERIAL.

APPLIGATION FILED JUNE 14, 1904.

N0 MODEL. 2 SHEETS-SKBET 2.

W [T/VESSESx [A E/Woks. f m miWW BY W mg, Altomey-s UNITED STATESPatented July 26, 1904.

PATENT OE IcE.

EURIE L. MERRIMAN AND JOSIAH W. VOUGHT, OF SORANTON, PENN- SYLVANIA.

DRIER FOR GRANULAR MATERIAL.

SPECIFICATION forming part of Letters Patent N 0. 765,708, dated July26, 1904.

Application filed June 14, 1904-.-

To all whom it may concern.-

Be it known that we, EURIE L. MERRIMAN and J OSIAH W. Vouerrr, ofScranton, in the county of Lackawanna, State of Pennsylvania, haveinvented certain new and useful Improvements in Driers for GranularMaterial; and we do hereby declare the following to be a full, clear,and exact description of the same, reference being had to theaccompanying drawings, forming a part of this specification, and to theletters of reference marked thereon.

This invention relates to improvements in driers for sand, grain, &c.,the objects being to provide an apparatus in which the moisture in thesand, grain, &c., will be removed bya continuous process and thematerial thoroughly dried without danger of burning or injuring the samein any particular.

The invention consists in certain novel details of construction andcombinations and arrangements of parts, all as will be now described,and pointed out particularly in the appended claims.

In the accompanying drawings, Figure 1 is a side elevation, partly insection and with parts broken away, of a drier embodying the presentimprovements. Fig. 2 is a similar view looking at one end of the drier;

Like letters of reference in both figures indicate the same parts Theletter A indicates a casing or hopper for the reception of the sand,grain, or other granular material to be dried, such casing or hopperbeing preferably made larger at the bottom than at the top to providefor clearance and prevent clogging or lodgment of the wet material,which latter is shoveled or dumped into the hopper and is discharged atthe bottom of the hopper through the drying-chamber and feed controllingappliances to be now described.

The dryingchamber and feed controlling appliances are an improvementupon the appliances for the same purpose illustrated and described inour prior patents, Nos. 591,413 and 652,369, and in the presentarrangement are assembled in a structure which constitutes the base forthe hopper, the vertically-extending Serial No. 212,548. (No model.)

timbers of the latter being connected at their lower ends to brackets Bon the framing of the drying-chamber. The sides of the dryingat theopposite end are provided with sleeves 1 d, fitting accurately, butcapable of a slight sliding movement in apertures in the other manifold,whereby the pipes may expand and contract without straining anddistorting the structure. The manifolds are formed with transversehorizontal partitions D for forcing the circulation of the heatingmedium through the pipes in succession. Thus the steam may enter througha pipe E at one end and will be forced to traverse the pipes back andforth until it can escape through an exhaust-pipe F The coils orheating-pipes are normally intended to be heated by the exhaust-steamfrom an engine; but provision is made for supplying live steam from aboiler, as by a pipe G, and a pressure-valve (indicated at H) ispreferably provided in the exhaust to increase the temperature of theheating-pipes.

The heating-pipes are preferably spaced, as in said before-mentionedpatents, so as to bring the material into more intimate relation to thepipes as the drying progresses, and a valve mechanism I and a knocker Kare arranged below the pipes for controlling the passage of thematerial, all as in said prior structure.

The whole drier may be set on a foundation M, which may also constitutethe receiver for the dried material and from which it may drop throughvalved openings N to aconveyer arranged in a box O atone side of thedrier.

The stacks C, it will be noted, communicate at the lower ends withstack-boxes P, which are virtually prolongations of the side fines orboxes G, and the ends of said stack-boxes are closed by removable platesor doors P to permit of access to the flues for cleaning the same bymeans of any suitable long-handled implement.

Having thus described our invention, What We claim as new, and desire tosecure by Letters Patent, is

1. A drier such as described, comprising a receptacle for the materialto be dried and of larger dimensions at the bottom than at the top, adrying and feed-controlling apparatus 011 which said receptacle ismounted, having side flues in communication With the dryingcompartment,end manifolds, heating-pipes opening into said manifolds and extendinglongitudinally of the drying-compartment,

steam inlet and exhaust pipes communicating With the manifolds and meansfor controlling the flow of material through the drying-compartment;substantiallyas described. a

2. A drier for granular material comprising a hopper or receptacle forthe reception of the Wet material, a series of heating-pipes below saidhopper and between Which the material passes, manifolds into Which thepipes open forming the ends of the drying-chamber and flues forming thesides of said dryingchamber, said flues having ducts communicating Withthe drying-chamber and stacks at the ends for carrying ofl themoisture-laden air; substantially as described.

3. A drying-chamber for a drier for granular material formed by endmanifolds connected by pipes extending longitudinally of the chamber andside boxes or lines having transverse ducts open to said chamber;substantially as described.

4. A drying-chamber for adrier for granular material having afeed-controlling mechanism at the bottom and formed by side boxes orflues having transverse ducts opening on the under side in said chamberand end manifolds connected by pipes extending longitudinally of thechamber, means for circulating a heating medium through the pipes andmanifolds and means for carrying off the moistureladen air from the sideboxes or fiues; substantially as described.

5. In a drier such as described, the combination With the drying-chamberformed by the side flues and end manifolds, said fiues having transverseducts opening into the chamber and said manifolds being connected byheating-pipes, of brackets at each side of said chamber, verticalsupports held by said brackets and a hopper having its Walls supportedby the vertical supports; substantially as described.

' 6. In a drier such as described, the combination With the hopper, ofthe drying-chamber having the end manifolds, the heatingpipes threadedinto one of said manifolds and. sleeves on the opposite ends of thepipes fitting into openings in the other manifold to permit of expansionand contraction; substantially as described.

EURIE L. MERRIMAN. JOSIAH WV. VOUGHT.

WVitnesses:

C. P. WILSON, BERT BALDWIN.

